connective tissue (7)
building block of connective tissues, found in all connective tissue
provides tensile strength
collagen
< 1% found in connective tissue. Recoil of tissues
elastin
amount of tension or load placed on the tissues
stress
proportional degree of elongation that occurs during stress
strain
ability of tissues to return to their previous resting state
recovery
gradual lengthening of tissues when they are subjected to constant or repeated stress over a long duration
creep
ability of a tissue to return to its original resting length when stress is removed
elastic deformation
tendency of tissue to assume a new and greater length after the stretch force has been removed
plastic deformation
connective tissue properties (3):
the ability of a muscle to relax and yield to a stretch force
the ability to move a single joint or series of joints smoothly and easily through an unrestricted, pain-free ROM
flexibility
the amount of movement available to a joint moving within its anatomic range
ROM
What determines flexibility (6):
active mobility or active ROM (AROM)
dynamic flexibility
passive mobility or passive ROM (PROM)
passive flexibility
How to increase flexibility and ROM (3)
4 types of stretching:
stretch: placing a muscle in a fully elongated position and holding that position for a period of time
goals:
static stretching
stretch: performed actively by moving joints - body weighted or eliminated position - through avaiable range - gradually increase range and speed - does not diminish torque production - good to warm-up for sport/activity
dynamic stretching
stretch:
bounce at the end of ROM
ballistic stretching
stretch:
reflex inhibition and subsequent elongation of the contractile elements of the muscle
involves the Golgi Tendon Organs in the myotendinous junction, and the muscle spindles
proprioceptive neuromuscular facilitation (PNF)
a reflex relaxation that occurs in the same muscle where the golgi tendon organ is stimulated
(via isometric or isotonic contraction)
autogenic inhibition
contracting the opposing muscle group to that being stretched in order to achieve a reflex muscular relaxation that occurs in the muscle that is opposite the muscle where the golgi tendon organ is stimulated
reciprocal inhibition
types of PNF (3):